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Grand average time course of the relative decay time τd measured with the large-distance receiver R1. A low-pass 1 Hz Butterworth filter was applied to facilitate visual inspection of the signal (see also [8]). Emotionally neutral, pleasant and unpleasant values of the presented words are labeled with 'neu' (blue line), 'ple' (red line) and 'unp' (black line), respectively.
